Vintage Roland Cube Driver

[RamesesNiblick3]

Probably a long shot, but does anyone happen to have the details of the drives in the old Cube-60 Bass from the late 70's early 80's. I'd like to build a cab with the same tonal profile, so I figured step one was measure the driver. But mine has either been glued in at some point or 40+ years have turned the gasket into glue, so it does not look like it's coming out without a good risk of damaging it. So onto plan B; ask the internet.

These beasties: Bass Guitar Combo Amp Roland Cube-60 Bass

 

[ChristoMephisto]

Couldn't find the service notes for the Cube 60 but I do have the Super Cube 60 service notes which just has added bells and whistles like a sweepable mids knob.
If it's the same then it's a standard opamp gain stage with a 47k across the opamp with a 10k/1uf to ground. It's a low gain stage of 4.7 at 16Hz. It doubles the gain after the eq section.
Look up the notes for the SBC 60 for a better idea of what I'm talking about

 

[RamesesNiblick3]

Thanks ChristoMephisto, unfortunately I've typo'd and was trying to ask about the speaker driver. Who'd have though one s instead of an r and if would still make sense... (but the wrong sense)

 

[ChristoMephisto]

Thought the request was sound, the preamp/drive section of the Cube 60.
Others have copied preamps before